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Refactored the OpenGLGraphicsContextCustomShader class and added a demo for it.

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This commit is contained in:
jules 2014-02-24 19:03:47 +00:00
parent 4c6e655f0f
commit 56f7676601
21 changed files with 502 additions and 108 deletions
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1
extras/Demo/Builds/Android/jni/Android.mk
View file

@ -36,6 +36,7 @@ LOCAL_SRC_FILES := \
../../../Source/Demos/MultiTouch.cpp\
../../../Source/Demos/NetworkingDemo.cpp\
../../../Source/Demos/OpenGLDemo.cpp\
../../../Source/Demos/OpenGLDemo2D.cpp\
../../../Source/Demos/PropertiesDemo.cpp\
../../../Source/Demos/SystemInfoDemo.cpp\
../../../Source/Demos/TimersAndEventsDemo.cpp\

6
extras/Demo/Builds/Linux/Makefile
View file

@ -79,6 +79,7 @@ OBJECTS := \
$(OBJDIR)/MultiTouch_595f3a2e.o \
$(OBJDIR)/NetworkingDemo_fbd1b19f.o \
$(OBJDIR)/OpenGLDemo_fdac55da.o \
$(OBJDIR)/OpenGLDemo2D_48eeadec.o \
$(OBJDIR)/PropertiesDemo_8ff1a8de.o \
$(OBJDIR)/SystemInfoDemo_984acd28.o \
$(OBJDIR)/TimersAndEventsDemo_f2656547.o \
@ -263,6 +264,11 @@ $(OBJDIR)/OpenGLDemo_fdac55da.o: ../../Source/Demos/OpenGLDemo.cpp
@echo "Compiling OpenGLDemo.cpp"
@$(CXX) $(CXXFLAGS) -o "$@" -c "$<"
$(OBJDIR)/OpenGLDemo2D_48eeadec.o: ../../Source/Demos/OpenGLDemo2D.cpp
-@mkdir -p $(OBJDIR)
@echo "Compiling OpenGLDemo2D.cpp"
@$(CXX) $(CXXFLAGS) -o "$@" -c "$<"
$(OBJDIR)/PropertiesDemo_8ff1a8de.o: ../../Source/Demos/PropertiesDemo.cpp
-@mkdir -p $(OBJDIR)
@echo "Compiling PropertiesDemo.cpp"

6
extras/Demo/Builds/MacOSX/JuceDemo.xcodeproj/project.pbxproj
View file

@ -49,6 +49,7 @@
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@ -311,6 +312,7 @@
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39A06D3252DDA6F97FB09495 = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; name = OpenGLDemo2D.cpp; path = ../../Source/Demos/OpenGLDemo2D.cpp; sourceTree = "SOURCE_ROOT"; };
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@ -931,6 +933,7 @@
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@ -939,7 +942,6 @@
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@ -1042,6 +1044,7 @@
24B00BED20980D12119C228F,
FD46383E356A5DDC1AD53380,
2DA02BCCDBFD5BF2DA2D2FA9,
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5AB15A508A07934A89398A6B,
84BAF97675BE522B63DC9A4B,
B731664FB9EEEBC618BAB5A0,
@ -2288,6 +2291,7 @@
2346D126B3690390A0925F06,
C54286354BE46CB39B4C5225,
FE559832F5E168F0FF04CB6E,
E635FA4F49200CDAE3E4E6F0,
CDC1A7E9F07FBFDD5DA92031,
5B96583E8DAA4EA4EA1ACF18,
372B92C7E54D51285649FDD1,

1
extras/Demo/Builds/VisualStudio2010/JuceDemo.vcxproj
View file

@ -153,6 +153,7 @@
<ClCompile Include="..\..\Source\Demos\MultiTouch.cpp"/>
<ClCompile Include="..\..\Source\Demos\NetworkingDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\OpenGLDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\OpenGLDemo2D.cpp"/>
<ClCompile Include="..\..\Source\Demos\PropertiesDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\SystemInfoDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\TimersAndEventsDemo.cpp"/>

3
extras/Demo/Builds/VisualStudio2010/JuceDemo.vcxproj.filters
View file

@ -403,6 +403,9 @@
<ClCompile Include="..\..\Source\Demos\OpenGLDemo.cpp">
<Filter>JuceDemo\Source\Demos</Filter>
</ClCompile>
<ClCompile Include="..\..\Source\Demos\OpenGLDemo2D.cpp">
<Filter>JuceDemo\Source\Demos</Filter>
</ClCompile>
<ClCompile Include="..\..\Source\Demos\PropertiesDemo.cpp">
<Filter>JuceDemo\Source\Demos</Filter>
</ClCompile>

1
extras/Demo/Builds/VisualStudio2012/JuceDemo.vcxproj
View file

@ -159,6 +159,7 @@
<ClCompile Include="..\..\Source\Demos\MultiTouch.cpp"/>
<ClCompile Include="..\..\Source\Demos\NetworkingDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\OpenGLDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\OpenGLDemo2D.cpp"/>
<ClCompile Include="..\..\Source\Demos\PropertiesDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\SystemInfoDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\TimersAndEventsDemo.cpp"/>

3
extras/Demo/Builds/VisualStudio2012/JuceDemo.vcxproj.filters
View file

@ -403,6 +403,9 @@
<ClCompile Include="..\..\Source\Demos\OpenGLDemo.cpp">
<Filter>JuceDemo\Source\Demos</Filter>
</ClCompile>
<ClCompile Include="..\..\Source\Demos\OpenGLDemo2D.cpp">
<Filter>JuceDemo\Source\Demos</Filter>
</ClCompile>
<ClCompile Include="..\..\Source\Demos\PropertiesDemo.cpp">
<Filter>JuceDemo\Source\Demos</Filter>
</ClCompile>

1
extras/Demo/Builds/VisualStudio2013/JuceDemo.vcxproj
View file

@ -159,6 +159,7 @@
<ClCompile Include="..\..\Source\Demos\MultiTouch.cpp"/>
<ClCompile Include="..\..\Source\Demos\NetworkingDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\OpenGLDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\OpenGLDemo2D.cpp"/>
<ClCompile Include="..\..\Source\Demos\PropertiesDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\SystemInfoDemo.cpp"/>
<ClCompile Include="..\..\Source\Demos\TimersAndEventsDemo.cpp"/>

3
extras/Demo/Builds/VisualStudio2013/JuceDemo.vcxproj.filters
View file

@ -403,6 +403,9 @@
<ClCompile Include="..\..\Source\Demos\OpenGLDemo.cpp">
<Filter>JuceDemo\Source\Demos</Filter>
</ClCompile>
<ClCompile Include="..\..\Source\Demos\OpenGLDemo2D.cpp">
<Filter>JuceDemo\Source\Demos</Filter>
</ClCompile>
<ClCompile Include="..\..\Source\Demos\PropertiesDemo.cpp">
<Filter>JuceDemo\Source\Demos</Filter>
</ClCompile>

40
extras/Demo/Builds/iOS/JuceDemo.xcodeproj/project.pbxproj
View file

@ -44,6 +44,7 @@
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F380FE12E78619086BA33CDB = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; name = "juce_InterprocessConnection.cpp"; path = "../../../../modules/juce_events/interprocess/juce_InterprocessConnection.cpp"; sourceTree = "SOURCE_ROOT"; };
F3A9E0AE5ED05CA1AD6F56E5 = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = "juce_SystemAudioVolume.h"; path = "../../../../modules/juce_audio_devices/audio_io/juce_SystemAudioVolume.h"; sourceTree = "SOURCE_ROOT"; };
F3AF542BB3A9E6CC1D6E37DD = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; name = "juce_PluginListComponent.cpp"; path = "../../../../modules/juce_audio_processors/scanning/juce_PluginListComponent.cpp"; sourceTree = "SOURCE_ROOT"; };
F3B746DC92EFE7A9B8EA9E43 = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = "juce_UndoableAction.h"; path = "../../../../modules/juce_data_structures/undomanager/juce_UndoableAction.h"; sourceTree = "SOURCE_ROOT"; };
@ -981,6 +982,7 @@
F843FC09B4C2A10C76D8D35C = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; name = "juce_PluginDirectoryScanner.cpp"; path = "../../../../modules/juce_audio_processors/scanning/juce_PluginDirectoryScanner.cpp"; sourceTree = "SOURCE_ROOT"; };
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F89584972F16A8EC49E5E74D = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = "juce_RelativeCoordinatePositioner.h"; path = "../../../../modules/juce_gui_basics/positioning/juce_RelativeCoordinatePositioner.h"; sourceTree = "SOURCE_ROOT"; };
F91A3C07D81BE2D4A191C9A2 = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = "juce_Timer.h"; path = "../../../../modules/juce_events/timers/juce_Timer.h"; sourceTree = "SOURCE_ROOT"; };
F965E478C21D19EF32760A9C = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = "juce_FilePreviewComponent.h"; path = "../../../../modules/juce_gui_basics/filebrowser/juce_FilePreviewComponent.h"; sourceTree = "SOURCE_ROOT"; };
F97F775EDCD2D1C497625D4F = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; name = "juce_mac_Fonts.mm"; path = "../../../../modules/juce_graphics/native/juce_mac_Fonts.mm"; sourceTree = "SOURCE_ROOT"; };
F98BEA2FEE66A3DEAD9D43B1 = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; name = "juce_mac_SystemTrayIcon.cpp"; path = "../../../../modules/juce_gui_extra/native/juce_mac_SystemTrayIcon.cpp"; sourceTree = "SOURCE_ROOT"; };
@ -1032,6 +1034,7 @@
24B00BED20980D12119C228F,
FD46383E356A5DDC1AD53380,
2DA02BCCDBFD5BF2DA2D2FA9,
39A06D3252DDA6F97FB09495,
5AB15A508A07934A89398A6B,
84BAF97675BE522B63DC9A4B,
B731664FB9EEEBC618BAB5A0,
@ -2270,6 +2273,7 @@
2346D126B3690390A0925F06,
C54286354BE46CB39B4C5225,
FE559832F5E168F0FF04CB6E,
E635FA4F49200CDAE3E4E6F0,
CDC1A7E9F07FBFDD5DA92031,
5B96583E8DAA4EA4EA1ACF18,
372B92C7E54D51285649FDD1,

2
extras/Demo/JuceDemo.jucer
View file

@ -250,6 +250,8 @@
<FILE id="iii6RP" name="NetworkingDemo.cpp" compile="1" resource="0"
file="Source/Demos/NetworkingDemo.cpp"/>
<FILE id="r2PxPF" name="OpenGLDemo.cpp" compile="1" resource="0" file="Source/Demos/OpenGLDemo.cpp"/>
<FILE id="SXYKYN" name="OpenGLDemo2D.cpp" compile="1" resource="0"
file="Source/Demos/OpenGLDemo2D.cpp"/>
<FILE id="b2eKRP" name="PropertiesDemo.cpp" compile="1" resource="0"
file="Source/Demos/PropertiesDemo.cpp"/>
<FILE id="cmVbyh" name="SystemInfoDemo.cpp" compile="1" resource="0"

41
extras/Demo/Source/Demos/OpenGLDemo.cpp
View file

@ -24,6 +24,9 @@
*/
#include "../JuceDemoHeader.h"
#if JUCE_OPENGL
#include "WavefrontObjParser.h"
@ -97,7 +100,7 @@ struct OpenGLDemoClasses
OpenGLShaderProgram& shader,
const char* attributeName)
{
if (openGLContext.extensions.glGetAttribLocation (shader.programID, attributeName) < 0)
if (openGLContext.extensions.glGetAttribLocation (shader.getProgramID(), attributeName) < 0)
return nullptr;
return new OpenGLShaderProgram::Attribute (shader, attributeName);
@ -124,7 +127,7 @@ struct OpenGLDemoClasses
OpenGLShaderProgram& shader,
const char* uniformName)
{
if (openGLContext.extensions.glGetUniformLocation (shader.programID, uniformName) < 0)
if (openGLContext.extensions.glGetUniformLocation (shader.getProgramID(), uniformName) < 0)
return nullptr;
return new OpenGLShaderProgram::Uniform (shader, uniformName);
@ -864,7 +867,7 @@ struct OpenGLDemoClasses
"varying vec2 textureCoordOut;\n"
"varying float lightIntensity;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" destinationColour = sourceColour;\n"
" textureCoordOut = texureCoordIn;\n"
@ -888,7 +891,7 @@ struct OpenGLDemoClasses
"\n"
"uniform sampler2D texture;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
#if JUCE_OPENGL_ES
" highp float l = max (0.3, lightIntensity * 0.3);\n"
@ -915,7 +918,7 @@ struct OpenGLDemoClasses
"varying vec4 destinationColour;\n"
"varying vec2 textureCoordOut;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" destinationColour = sourceColour;\n"
" textureCoordOut = texureCoordIn;\n"
@ -933,7 +936,7 @@ struct OpenGLDemoClasses
"\n"
"uniform sampler2D texture;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" gl_FragColor = texture2D (texture, textureCoordOut);\n"
"}\n"
@ -953,7 +956,7 @@ struct OpenGLDemoClasses
"varying vec4 destinationColour;\n"
"varying vec2 textureCoordOut;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" destinationColour = sourceColour;\n"
" textureCoordOut = texureCoordIn;\n"
@ -971,7 +974,7 @@ struct OpenGLDemoClasses
"\n"
"uniform sampler2D texture;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" gl_FragColor = destinationColour;\n"
"}\n"
@ -995,7 +998,7 @@ struct OpenGLDemoClasses
"varying float yPos;\n"
"varying float zPos;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" vec4 v = vec4 (position);\n"
" xPos = clamp (v.x, 0.0, 1.0);\n"
@ -1019,7 +1022,7 @@ struct OpenGLDemoClasses
"varying float zPos;\n"
#endif
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4 (xPos, yPos, zPos, 1.0);\n"
"}"
@ -1037,7 +1040,7 @@ struct OpenGLDemoClasses
"\n"
"varying vec2 textureCoordOut;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" textureCoordOut = texureCoordIn;\n"
" gl_Position = projectionMatrix * viewMatrix * position;\n"
@ -1054,7 +1057,7 @@ struct OpenGLDemoClasses
#endif
"uniform float bouncingNumber;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" float b = bouncingNumber;\n"
" float n = b * PI * 2.0;\n"
@ -1079,7 +1082,7 @@ struct OpenGLDemoClasses
"\n"
"varying float lightIntensity;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" vec4 light = viewMatrix * lightPosition;\n"
" lightIntensity = dot (light, normal);\n"
@ -1094,7 +1097,7 @@ struct OpenGLDemoClasses
"varying float lightIntensity;\n"
#endif
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
#if JUCE_OPENGL_ES
" highp float l = lightIntensity * 0.25;\n"
@ -1121,7 +1124,7 @@ struct OpenGLDemoClasses
"\n"
"varying float lightIntensity;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" vec4 light = viewMatrix * lightPosition;\n"
" lightIntensity = dot (light, normal);\n"
@ -1139,7 +1142,7 @@ struct OpenGLDemoClasses
"varying float lightIntensity;\n"
#endif
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
#if JUCE_OPENGL_ES
" highp float l = lightIntensity * 0.25;\n"
@ -1166,7 +1169,7 @@ struct OpenGLDemoClasses
"\n"
"varying float lightIntensity;\n"
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
" vec4 light = viewMatrix * lightPosition;\n"
" lightIntensity = dot (light, normal);\n"
@ -1181,7 +1184,7 @@ struct OpenGLDemoClasses
"varying float lightIntensity;\n"
#endif
"\n"
"void main (void)\n"
"void main()\n"
"{\n"
#if JUCE_OPENGL_ES
" highp float intensity = lightIntensity * 0.5;\n"
@ -1211,3 +1214,5 @@ struct OpenGLDemoClasses
// This static object will register this demo type in a global list of demos..
static JuceDemoType<OpenGLDemoClasses::OpenGLDemo> demo ("20 Graphics: OpenGL");
#endif

250
extras/Demo/Source/Demos/OpenGLDemo2D.cpp Normal file
View file

@ -0,0 +1,250 @@
/*
==============================================================================
This file is part of the JUCE library - "Jules' Utility Class Extensions"
Copyright 2004-12 by Raw Material Software Ltd.
------------------------------------------------------------------------------
JUCE can be redistributed and/or modified under the terms of the GNU General
Public License (Version 2), as published by the Free Software Foundation.
A copy of the license is included in the JUCE distribution, or can be found
online at www.gnu.org/licenses.
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.rawmaterialsoftware.com/juce for more information.
==============================================================================
*/
#include "../JuceDemoHeader.h"
#if JUCE_OPENGL
//==============================================================================
class OpenGL2DShaderDemo : public Component,
private CodeDocument::Listener,
private ComboBox::Listener,
private Timer
{
public:
OpenGL2DShaderDemo()
: fragmentEditorComp (fragmentDocument, nullptr)
{
setOpaque (true);
MainAppWindow::getMainAppWindow()->setOpenGLRenderingEngine();
addAndMakeVisible (statusLabel);
statusLabel.setJustificationType (Justification::topLeft);
statusLabel.setColour (Label::textColourId, Colours::black);
statusLabel.setFont (Font (14.0f));
Array<ShaderPreset> presets (getPresets());
StringArray presetNames;
for (int i = 0; i < presets.size(); ++i)
presetBox.addItem (presets[i].name, i + 1);
addAndMakeVisible (presetLabel);
presetLabel.setText ("Shader Preset:", dontSendNotification);
presetLabel.attachToComponent (&presetBox, true);
addAndMakeVisible (presetBox);
presetBox.addListener (this);
Colour editorBackground (Colours::white.withAlpha (0.6f));
fragmentEditorComp.setColour (CodeEditorComponent::backgroundColourId, editorBackground);
fragmentEditorComp.setOpaque (false);
fragmentDocument.addListener (this);
addAndMakeVisible (fragmentEditorComp);
presetBox.setSelectedItemIndex (0);
}
~OpenGL2DShaderDemo()
{
shader = nullptr;
}
void paint (Graphics& g)
{
g.fillCheckerBoard (getLocalBounds(), 48, 48, Colours::lightgrey, Colours::white);
if (shader == nullptr || shader->getFragmentShaderCode() != fragmentCode)
{
shader = nullptr;
if (fragmentCode.isNotEmpty())
{
shader = new OpenGLGraphicsContextCustomShader (fragmentCode);
Result result (shader->checkCompilation (g.getInternalContext()));
if (result.failed())
{
statusLabel.setText (result.getErrorMessage(), dontSendNotification);
shader = nullptr;
}
}
}
if (shader != nullptr)
{
statusLabel.setText (String::empty, dontSendNotification);
shader->fillRect (g.getInternalContext(), getLocalBounds());
}
}
void resized() override
{
Rectangle<int> area (getLocalBounds().reduced (4));
statusLabel.setBounds (area.removeFromTop (75));
area.removeFromTop (area.getHeight() / 2);
Rectangle<int> presets (area.removeFromTop (25));
presets.removeFromLeft (100);
presetBox.setBounds (presets.removeFromLeft (150));
area.removeFromTop (4);
fragmentEditorComp.setBounds (area);
}
void selectPreset (int preset)
{
const ShaderPreset& p = getPresets()[preset];
fragmentDocument.replaceAllContent (p.fragmentShader);
startTimer (1);
}
ScopedPointer<OpenGLGraphicsContextCustomShader> shader;
Label statusLabel, presetLabel;
ComboBox presetBox;
CodeDocument fragmentDocument;
CodeEditorComponent fragmentEditorComp;
String fragmentCode;
private:
enum { shaderLinkDelay = 500 };
void codeDocumentTextInserted (const String& /*newText*/, int /*insertIndex*/) override
{
startTimer (shaderLinkDelay);
}
void codeDocumentTextDeleted (int /*startIndex*/, int /*endIndex*/) override
{
startTimer (shaderLinkDelay);
}
void timerCallback() override
{
stopTimer();
fragmentCode = fragmentDocument.getAllContent();
repaint();
}
void comboBoxChanged (ComboBox*) override
{
selectPreset (presetBox.getSelectedItemIndex());
}
struct ShaderPreset
{
const char* name;
const char* fragmentShader;
};
static Array<ShaderPreset> getPresets()
{
#define SHADER_DEMO_HEADER \
"/* This demo shows the use of the OpenGLGraphicsContextCustomShader,\n" \
" which allows a 2D area to be filled using a GL shader program.\n" \
"\n" \
" Edit the shader program below and it will be \n" \
" recompiled in real-time!\n" \
"*/\n\n"
ShaderPreset presets[] =
{
{
"Simple Gradient",
SHADER_DEMO_HEADER
"void main()\n"
"{\n"
" " JUCE_MEDIUMP " vec4 colour1 = vec4 (1.0, 0.4, 0.6, 1.0);\n"
" " JUCE_MEDIUMP " vec4 colour2 = vec4 (0.0, 0.8, 0.6, 1.0);\n"
" " JUCE_MEDIUMP " float alpha = pixelPos.x / 1000.0;\n"
" gl_FragColor = pixelAlpha * mix (colour1, colour2, alpha);\n"
"}\n"
},
{
"Circular Gradient",
SHADER_DEMO_HEADER
"void main()\n"
"{\n"
" " JUCE_MEDIUMP " vec4 colour1 = vec4 (1.0, 0.4, 0.6, 1.0);\n"
" " JUCE_MEDIUMP " vec4 colour2 = vec4 (0.3, 0.4, 0.4, 1.0);\n"
" " JUCE_MEDIUMP " float alpha = distance (pixelPos, vec2 (600.0, 500.0)) / 400.0;\n"
" gl_FragColor = pixelAlpha * mix (colour1, colour2, alpha);\n"
"}\n"
},
{
"Cicle",
SHADER_DEMO_HEADER
"void main()\n"
"{\n"
" " JUCE_MEDIUMP " vec4 colour1 = vec4 (0.1, 0.1, 0.9, 1.0);\n"
" " JUCE_MEDIUMP " vec4 colour2 = vec4 (0.0, 0.8, 0.6, 1.0);\n"
" " JUCE_MEDIUMP " float distance = distance (pixelPos, vec2 (600.0, 500.0));\n"
"\n"
" " JUCE_MEDIUMP " const float innerRadius = 200.0;\n"
" " JUCE_MEDIUMP " const float outerRadius = 210.0;\n"
"\n"
" if (distance < innerRadius)\n"
" gl_FragColor = colour1;\n"
" else if (distance > outerRadius)\n"
" gl_FragColor = colour2;\n"
" else\n"
" gl_FragColor = mix (colour1, colour2, (distance - innerRadius) / (outerRadius - innerRadius));\n"
"\n"
" gl_FragColor *= pixelAlpha;\n"
"}\n"
},
{
"Solid Colour",
SHADER_DEMO_HEADER
"void main()\n"
"{\n"
" gl_FragColor = vec4 (1.0, 0.6, 0.1, pixelAlpha);\n"
"}\n"
}
};
return Array<ShaderPreset> (presets, numElementsInArray (presets));
}
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (OpenGL2DShaderDemo)
};
//==============================================================================
// This static object will register this demo type in a global list of demos..
static JuceDemoType<OpenGL2DShaderDemo> demo ("20 Graphics: OpenGL 2D");
#endif

14
extras/Demo/Source/MainWindow.cpp
View file

@ -215,7 +215,14 @@ public:
bool isShowingOpenGLDemo() const
{
return currentDemo != nullptr && currentDemo->getName().contains ("OpenGL");
return currentDemo != nullptr
&& currentDemo->getName().contains ("OpenGL")
&& ! isShowingOpenGL2DDemo();
}
bool isShowingOpenGL2DDemo() const
{
return currentDemo != nullptr && currentDemo->getName().contains ("OpenGL 2D");
}
private:
@ -605,6 +612,11 @@ void MainAppWindow::setRenderingEngine (int index)
peer->setCurrentRenderingEngine (index);
}
void MainAppWindow::setOpenGLRenderingEngine()
{
setRenderingEngine (getRenderingEngines().indexOf (openGLRendererName));
}
int MainAppWindow::getActiveRenderingEngine() const
{
#if JUCE_OPENGL

1
extras/Demo/Source/MainWindow.h
View file

@ -51,6 +51,7 @@ public:
StringArray getRenderingEngines() const;
int getActiveRenderingEngine() const;
void setRenderingEngine (int index);
void setOpenGLRenderingEngine();
// (returns the exploding JUCE logo path)
static Path getJUCELogoPath();

1
modules/juce_opengl/juce_opengl.h
View file

@ -95,6 +95,7 @@ namespace juce
class OpenGLTexture;
class OpenGLFrameBuffer;
class OpenGLShaderProgram;
#include "native/juce_MissingGLDefinitions.h"
#include "opengl/juce_OpenGLHelpers.h"

12
modules/juce_opengl/opengl/juce_OpenGLContext.cpp
View file

@ -739,9 +739,17 @@ void OpenGLContext::setAssociatedObject (const char* name, ReferenceCountedObjec
if (index >= 0)
{
c->associatedObjects.set (index, newObject);
if (newObject != nullptr)
{
c->associatedObjects.set (index, newObject);
}
else
{
c->associatedObjectNames.remove (index);
c->associatedObjects.remove (index);
}
}
else
else if (newObject != nullptr)
{
c->associatedObjectNames.add (name);
c->associatedObjects.add (newObject);

120
modules/juce_opengl/opengl/juce_OpenGLGraphicsContext.cpp
View file

@ -354,12 +354,13 @@ public:
" gl_Position = vec4 (scaledPos.x - 1.0, 1.0 - scaledPos.y, 0, 1.0);"
"}");
program.addFragmentShader (fragmentShader);
compiledOk = program.addFragmentShader (fragmentShader);
program.link();
JUCE_CHECK_OPENGL_ERROR
}
OpenGLShaderProgram program;
bool compiledOk;
};
struct ShaderBase : public ShaderProgramHolder
@ -1492,12 +1493,13 @@ class SavedState : public RenderingHelpers::SavedStateBase<SavedState>
public:
SavedState (GLState* const s)
: BaseClass (s->target.bounds), state (s)
: BaseClass (s->target.bounds), state (s), isUsingCustomShader (false)
{}
SavedState (const SavedState& other)
: BaseClass (other), font (other.font),
state (other.state), transparencyLayer (other.transparencyLayer),
state (other.state), isUsingCustomShader (false),
transparencyLayer (other.transparencyLayer),
previousTarget (other.previousTarget.createCopy())
{}
@ -1618,9 +1620,13 @@ public:
template <typename IteratorType>
void fillWithSolidColour (IteratorType& iter, const PixelARGB colour, bool replaceContents) const
{
state->activeTextures.disableTextures (state->shaderQuadQueue);
state->blendMode.setBlendMode (state->shaderQuadQueue, replaceContents);
state->setShader (state->currentShader.programs->solidColourProgram);
if (! isUsingCustomShader)
{
state->activeTextures.disableTextures (state->shaderQuadQueue);
state->blendMode.setBlendMode (state->shaderQuadQueue, replaceContents);
state->setShader (state->currentShader.programs->solidColourProgram);
}
state->shaderQuadQueue.add (iter, colour);
}
@ -1631,16 +1637,21 @@ public:
state->shaderQuadQueue.add (iter, fillType.colour.getPixelARGB());
}
void fillRectWithCustomShader (OpenGLRendering::ShaderPrograms::ShaderBase& shader, const Rectangle<int>& area, Colour colour)
void fillRectWithCustomShader (OpenGLRendering::ShaderPrograms::ShaderBase& shader, const Rectangle<int>& area)
{
state->setShader (shader);
state->shaderQuadQueue.add (area, colour.getPixelARGB());
isUsingCustomShader = true;
fillRect (area, true);
isUsingCustomShader = false;
state->currentShader.clearShader (state->shaderQuadQueue);
}
//==============================================================================
Font font;
GLState* state;
bool isUsingCustomShader;
private:
Image transparencyLayer;
@ -1659,9 +1670,9 @@ public:
stack.initialise (new SavedState (&glState));
}
void fillRectWithCustomShader (ShaderPrograms::ShaderBase& shader, const Rectangle<int>& area, Colour colour)
void fillRectWithCustomShader (ShaderPrograms::ShaderBase& shader, const Rectangle<int>& area)
{
static_cast<SavedState&> (*stack).fillRectWithCustomShader (shader, area, colour);
static_cast<SavedState&> (*stack).fillRectWithCustomShader (shader, area);
}
GLState glState;
@ -1750,39 +1761,88 @@ void clearOpenGLGlyphCache()
//==============================================================================
struct OpenGLGraphicsContextCustomShader::Pimpl : public OpenGLRendering::ShaderPrograms::ShaderBase
struct CustomProgram : public ReferenceCountedObject,
public OpenGLRendering::ShaderPrograms::ShaderBase
{
Pimpl (OpenGLRendering::ShaderContext& c, const String& fragmentShader)
CustomProgram (OpenGLRendering::ShaderContext& c, const String& fragmentShader)
: ShaderBase (c.glState.target.context, fragmentShader.toRawUTF8())
{
}
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Pimpl)
};
OpenGLGraphicsContextCustomShader::OpenGLGraphicsContextCustomShader (Pimpl* p) : pimpl (p) {}
OpenGLGraphicsContextCustomShader::~OpenGLGraphicsContextCustomShader() {}
OpenGLGraphicsContextCustomShader* OpenGLGraphicsContextCustomShader::create (LowLevelGraphicsContext& gc, StringRef fragmentShaderCode)
{
if (OpenGLRendering::ShaderContext* sc = dynamic_cast<OpenGLRendering::ShaderContext*> (&gc))
static CustomProgram* get (const String& hashName)
{
ScopedPointer<Pimpl> p (new Pimpl (*sc, String (JUCE_DECLARE_VARYING_COLOUR JUCE_DECLARE_VARYING_PIXELPOS "\n") + fragmentShaderCode));
if (OpenGLContext* c = OpenGLContext::getCurrentContext())
return static_cast<CustomProgram*> (c->getAssociatedObject (hashName.toRawUTF8()));
if (! p->program.isLinked())
return nullptr;
return new OpenGLGraphicsContextCustomShader (p.release());
return nullptr;
}
jassertfalse; // You've passed-in a non-GL context!
static CustomProgram* getOrCreate (LowLevelGraphicsContext& gc, const String& hashName, const String& code, String& errorMessage)
{
if (CustomProgram* c = get (hashName))
return c;
if (OpenGLRendering::ShaderContext* sc = dynamic_cast<OpenGLRendering::ShaderContext*> (&gc))
{
ReferenceCountedObjectPtr<CustomProgram> c (new CustomProgram (*sc, code));
if (c->compiledOk)
{
if (OpenGLContext* context = OpenGLContext::getCurrentContext())
{
context->setAssociatedObject (hashName.toRawUTF8(), c);
return c;
}
}
errorMessage = c->program.getLastError();
}
return nullptr;
}
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (CustomProgram)
};
OpenGLGraphicsContextCustomShader::OpenGLGraphicsContextCustomShader (const String& fragmentShaderCode)
: code (String (JUCE_DECLARE_VARYING_COLOUR
JUCE_DECLARE_VARYING_PIXELPOS
"\nfloat pixelAlpha = frontColour.a;\n") + fragmentShaderCode),
hashName (String::toHexString (fragmentShaderCode.hashCode64()) + "_shader")
{
}
OpenGLGraphicsContextCustomShader::~OpenGLGraphicsContextCustomShader()
{
if (OpenGLContext* context = OpenGLContext::getCurrentContext())
context->setAssociatedObject (hashName.toRawUTF8(), nullptr);
}
OpenGLShaderProgram* OpenGLGraphicsContextCustomShader::getProgram (LowLevelGraphicsContext& gc) const
{
String errorMessage;
if (CustomProgram* c = CustomProgram::getOrCreate (gc, hashName, code, errorMessage))
return &(c->program);
return nullptr;
}
void OpenGLGraphicsContextCustomShader::fillRect (LowLevelGraphicsContext& gc, const Rectangle<int>& area, Colour colour) const
void OpenGLGraphicsContextCustomShader::fillRect (LowLevelGraphicsContext& gc, const Rectangle<int>& area) const
{
jassert (pimpl != nullptr);
String errorMessage;
if (OpenGLRendering::ShaderContext* sc = dynamic_cast<OpenGLRendering::ShaderContext*> (&gc))
sc->fillRectWithCustomShader (*pimpl, area, colour);
if (CustomProgram* c = CustomProgram::getOrCreate (gc, hashName, code, errorMessage))
sc->fillRectWithCustomShader (*c, area);
}
Result OpenGLGraphicsContextCustomShader::checkCompilation (LowLevelGraphicsContext& gc)
{
String errorMessage;
if (CustomProgram::getOrCreate (gc, hashName, code, errorMessage) != nullptr)
return Result::ok();
return Result::fail (errorMessage);
}

50
modules/juce_opengl/opengl/juce_OpenGLGraphicsContext.h
View file

@ -47,41 +47,47 @@ LowLevelGraphicsContext* createOpenGLGraphicsContext (OpenGLContext& context,
//==============================================================================
/**
/**
Used to create custom shaders for use with an openGL 2D rendering context.
Given a GL-based rendering context, you can write a fragment shader that applies some
kind of per-pixel effect.
*/
struct JUCE_API OpenGLGraphicsContextCustomShader
{
/** Creates a custom shader.
The shader code will not be compiled until actually needed, so it's OK to call this
constructor when no GL context is active.
The code should be a normal fragment shader. As well as the usual GLSL variables, there is
also an automatically declared varying vec2 called "pixelPos", which indicates the pixel
position within the graphics context of the pixel being drawn. There is also a varying value
"pixelAlpha", which indicates the alpha by which the pixel should be multiplied, so that the
edges of any clip-region masks are anti-aliased correctly.
*/
OpenGLGraphicsContextCustomShader (const String& fragmentShaderCode);
/** Destructor. */
~OpenGLGraphicsContextCustomShader();
/** Attempts to compile and return a new shader object.
This must be called only when an openGL context is active. It'll return nullptr
if the code fails to compile or some other error occurs.
The shader code should be a normal fragment shader. As well as the usual variables, there
will be some extra ones: "frontColour", which is the colour that gets passed into the fillRect
method, and "pixelPos", which is a vec2 indicating the pixel position within the graphics context
of the pixel being drawn.
/** Returns the program, if it has been linked and is active.
This can be called when you're about to use fillRect, to set up any uniforms/textures that
the program may require.
*/
static OpenGLGraphicsContextCustomShader* create (LowLevelGraphicsContext&,
StringRef fragmentShaderCode);
OpenGLShaderProgram* getProgram (LowLevelGraphicsContext&) const;
/** Applies the shader to a rectangle within the graphics context.
NB: This will ignore any clip region that is active.
*/
void fillRect (LowLevelGraphicsContext&, const Rectangle<int>& area, Colour colour) const;
/** Applies the shader to a rectangle within the graphics context. */
void fillRect (LowLevelGraphicsContext&, const Rectangle<int>& area) const;
/** Attempts to compile the program if necessary, and returns an error message if it fails. */
Result checkCompilation (LowLevelGraphicsContext&);
/** Returns the code that was used to create this object. */
const String& getFragmentShaderCode() const noexcept { return code; }
private:
struct Pimpl;
friend struct Pimpl;
friend struct ContainerDeletePolicy<Pimpl>;
ScopedPointer<Pimpl> pimpl;
OpenGLGraphicsContextCustomShader (Pimpl*);
String code, hashName;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (OpenGLGraphicsContextCustomShader)
};

45
modules/juce_opengl/opengl/juce_OpenGLShaderProgram.cpp
View file

@ -23,17 +23,33 @@
*/
OpenGLShaderProgram::OpenGLShaderProgram (const OpenGLContext& c) noexcept
: context (c)
: context (c), programID (0)
{
// This object can only be created and used when the current thread has an active OpenGL context.
jassert (OpenGLHelpers::isContextActive());
programID = context.extensions.glCreateProgram();
}
OpenGLShaderProgram::~OpenGLShaderProgram() noexcept
{
context.extensions.glDeleteProgram (programID);
release();
}
GLuint OpenGLShaderProgram::getProgramID() const noexcept
{
// This method can only be used when the current thread has an active OpenGL context.
jassert (OpenGLHelpers::isContextActive());
if (programID == 0)
programID = context.extensions.glCreateProgram();
return programID;
}
void OpenGLShaderProgram::release() noexcept
{
if (programID != 0)
{
context.extensions.glDeleteProgram (programID);
programID = 0;
}
}
double OpenGLShaderProgram::getLanguageVersion()
@ -83,7 +99,7 @@ bool OpenGLShaderProgram::addShader (StringRef code, GLenum type)
return false;
}
context.extensions.glAttachShader (programID, shaderID);
context.extensions.glAttachShader (getProgramID(), shaderID);
context.extensions.glDeleteShader (shaderID);
JUCE_CHECK_OPENGL_ERROR
return true;
@ -94,16 +110,21 @@ bool OpenGLShaderProgram::addFragmentShader (StringRef code) { return addShader
bool OpenGLShaderProgram::link() noexcept
{
context.extensions.glLinkProgram (programID);
// This method can only be used when the current thread has an active OpenGL context.
jassert (OpenGLHelpers::isContextActive());
GLuint progID = getProgramID();
context.extensions.glLinkProgram (progID);
GLint status = GL_FALSE;
context.extensions.glGetProgramiv (programID, GL_LINK_STATUS, &status);
context.extensions.glGetProgramiv (progID, GL_LINK_STATUS, &status);
if (status == GL_FALSE)
{
GLchar infoLog [16384];
GLsizei infoLogLength = 0;
context.extensions.glGetProgramInfoLog (programID, sizeof (infoLog), &infoLogLength, infoLog);
context.extensions.glGetProgramInfoLog (progID, sizeof (infoLog), &infoLogLength, infoLog);
errorLog = String (infoLog, (size_t) infoLogLength);
#if JUCE_DEBUG && ! JUCE_DONT_ASSERT_ON_GLSL_COMPILE_ERROR
@ -124,13 +145,13 @@ void OpenGLShaderProgram::use() const noexcept
}
OpenGLShaderProgram::Uniform::Uniform (const OpenGLShaderProgram& program, const char* const name)
: uniformID (program.context.extensions.glGetUniformLocation (program.programID, name)), context (program.context)
: uniformID (program.context.extensions.glGetUniformLocation (program.getProgramID(), name)), context (program.context)
{
jassert (uniformID >= 0);
}
OpenGLShaderProgram::Attribute::Attribute (const OpenGLShaderProgram& program, const char* name)
: attributeID (program.context.extensions.glGetAttribLocation (program.programID, name))
: attributeID (program.context.extensions.glGetAttribLocation (program.getProgramID(), name))
{
jassert (attributeID >= 0);
}

9
modules/juce_opengl/opengl/juce_OpenGLShaderProgram.h
View file

@ -82,12 +82,12 @@ public:
/** Get the output for the last shader compilation or link that failed. */
const String& getLastError() const noexcept { return errorLog; }
/** Returns true if the program is linked and ready for use. */
bool isLinked() const noexcept { return programID != 0; }
/** Selects this program into the current context. */
void use() const noexcept;
/** Deletes the program. */
void release() noexcept;
/** Represents an openGL uniform value.
After a program has been linked, you can create Uniform objects to let you
set the uniforms that your shaders use.
@ -154,10 +154,11 @@ public:
};
/** The ID number of the compiled program. */
GLuint programID;
GLuint getProgramID() const noexcept;
private:
const OpenGLContext& context;
mutable GLuint programID;
String errorLog;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (OpenGLShaderProgram)